Plamooraph co



F. s. WILLIAMS.

SEWING MACHINE. 1,310,460.

APPLICATION FILED APR. II, 1918.

Patented July 22, 1919.

4 SHEETS-SHEET I- 'rm-2 coLumlxm PLAxnmzarn cm, WASIHNUTQN. n. c.

F. S. WILLIAMS.

SEWING MACHINE.

1,310,460. APPLIcATIoN FILED APR. II. I9Is. Patented July 22 1919.

v4 SHEETS*SHEET 2.

Tux: CULUAIIIIA PLANOGRMII Cn., WASHINGTON. I7. c.

F. S. WILLIAMS.

SEWING MACHINE.

APPLICATION FILED APR. II 191B.

1,310,466. Patented July 22, 1919.

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l ,//I/I/E/I/ofr F/Pff/IP/c 5. M//L L #1 /v5 WITNESS ES 65 APPLICATIONFILED APR. II. |918.

F. S. WILLIAMS. sE-wlwe MACHINE.

Patented July 22, 1919.

4 SHEETS-SHEET 4.

I y 'IN ATTORNEYS THE COLUMBIA PLANOGRAPH co., WASHINGTON. D. c.

'rnvrrnn s'rafrns ramena* ernten FREDERIC S. WILLIAMS, OF BROOKLYN,YORK, ASSIGNOR TUFREDERICK KLEIN, TRUSTEE, OF NEW YORK, N. Y.

SEWING-MACHINE.

To all whom t may concern.'

Be it known that I, FREDERIC S. VIL- LIAMs, a citizen of the UnitedStates, and resident of the borough of Brooklyn, county of Kings, cityand State of New York, have invented certain new and useful Improvementsin Sewing-Machines, of which the following is a specificati-on.

My invention relates to sewing machines and more particularly to thattype thereof commonly known as lock-stitch sewing machines and has forits object to provide an improved and simplified construction in whichthe shuttle is stationary, in that it does not rotate, oscillate orreciprocate during the operation of the machine, as is generally thecase, but has simply a freedom of movement which may be best expressedby the term floating. A further object of my invention is to arrange andconstruct the shuttle in such a manner that it is readily accessible andeasily removable from the ma.A chine without interference with `otherele ments of the mechanism. Other objects will appear from thedescription hereinafter and the features of novelty will be pointed outin the appended claims.

In the accompanying drawings which for illustrative and descriptivepurposes show an example of my invention, Figure 1 is a front elevationpartly in section of a. lockstitch sewing machine; Fig. 2 is ahorizontal section on the line 2-2 of Fig. 1; Fig. 3 is a similar viewon the line 3 3 of Fig. 1; Fig. 4 is a detail end view partly insection; Fig. 5 is a detail side view partly in scctic-n; Figs. G and 7are views corresponding respectively to Figs. 4 and 5 but showing theparts in different positions; Fig. 8 is a detail elevation of theshuttle ease and adjacent elements; Fig. 9 is a view illustrating theshuttle case in position to permit the removal of the shuttle and Fig.10 is a plan A view thereof.

The machine as shown in Fig. l may comprise a `bed-plate 15 supportingthe usual upright pillar 16 from which extends the customary overhangingarm 17 adapted to support and provide bea-rings for the variousmechanisms mounted thereon and inclosed therein in the well known way.The driving `mechanism also may =be of any typical and customaryconstruction and, as shown in Fig. l, may comprise a drive orSpecification of Letters Patent.

Patented July 22, 1919.

Application filed April 11, 1918. Serial No. 227,872.,

pulley wheel 18 combined with the fly wheel 19 mounted upon the mainshaft 20 and arranged to be driven by suitable power in the usual or inany preferred manner.

The machine in the illustrated form further includes a bracket 21rigidly mounted upon the arm 17 and provided with spindle 22 forrotatably holding a spool of thread 23. A second bracket 24 extendsupwardly from the arm 17 at a distance from the bracket 21 and carriestension disks 25 and guide members 26 between and over which the thread27 from the spool 23 passes. A tension spring 28 is also mounted on thebracket 24 and guide hooks 29 and 30 are provided for the accommodationof the thread 27 which passes over a pulley 3l journaled on the outerend of a. lever 32 forming part of the take-up mechanism and operated inany well known way. From the pulley 31,s the needle thread 27 passesover a pulley 33 rotatably supported at the outer end of the arm 17 andis then led downwardly through a runway 34 on said arm 17, to andthrough the eye `of the needle 35. The latter is carried by the needlebar 36 which may be actuated to reciprocate up and down in any wellknown way, the needle lbeing mounted on the bar 36 in such a manner thata line through the eye of the needle is parallel with the direction offeed; in other words, the eye of said needle faces in the direction inwhich the material being sewed travels in Fig. l. The arm 17 furthersupports the usual movable presser foot 37 which in the machineillustrated is used, in addition to its other functions, as the feedmechanism for advancing the work, stitch by stitch, as required inmachines of this character. This feed mechanism may be operated in anydesired manner and need not be described in `detail as it forms no partof the present invention; the customary arm 38 may be provided forlifting the ypresser foot 37 out of contact with the work when necessaryor desired.

In the machine chosen for illustrative and descriptive purposes, whichis of a type particularly adapted for sewing gloves and the like, anupright hollorw work support 39 projects upwardly from and is securedupon the bed-plate 15 in registry with an opening L10 therein; the upperend of said work support 39 in the form shown, is closed by means of anend piece 41 provided with an aperture 42 in registry with the needle 35and through which said needle is adapted to reciprocate. Theconstruction further includes a hollow shuttle-casing 43 which in itsoperative position is located in registry with an opening 44 formed inand extending lengthwise of the work support 39. That side of the casing43 which faces the work support 39, in the operative position of theparts, is open whereby communication between the interior of said casing43 and work support 39 is established; the casing 43 also is provided atits one end with an opening adapted t'o register with the opening 40 ofthe .bed-plate 15. As shown in' the drawings, the upper end wall 45 ofthe casing 43 inclines upwardly when in the operative position shown inFigs. 1, 5 and 7, said wall 45, if desired, loing formed with a bead 46at its outer edge which may serve, in combination with a wall of theopening 44, to frictionally maint-ain said casing 43 in its operativeposition. The latter is further ,constructed with an interior surface 47forming a continuation of the interior surface of the end wall 45through the medium of a curved interior surface 48, said casing 43, inaddition, being provided with interior surfaces 49 .located oppositeeach other and converging downwardly in the operative position of thecasing, toward its lower open end. In the preferred arrangement thecasing 43 is pivotally connected at 50 with the bed-plate 15 so as to becapable of being swung from the operative position shown in Figs. 1, 5,and 7, to the inoperative position shown in Figs. 9 and 10 and backagain for the purpose to be more fully described hereinafter.

The shuttle casing 43 contains the shuttleI 51 and positions the same inregistry with the opening 44 of the work support, 39, said shuttle 51being shaped to correspond to the interior surfaces, 45, 47, and 48, ofthe casing and being further provided with oppositely located convergingsurfaces 52 adapted to rest upon the converging surfaces 49 of thecasing whereby the shuttle is prevented from dropping through theopening 40 of the bed-plate 15 by gravity. The shuttle 51 at its one endis formed with a recess 53 and with a projection 54 preferably taperingoutwardly, the purpose of both of which will be more fully pointed outfurther on in the description; in addition, the shuttle 51 is providedwith a circular recess 55 for the accommodation of the bobbin, 56, whichin the present case is constructed in the form of a circular spool, asshown in Figs. 1, 5 and 7. A groove 57 is formed in one face of theshuttle 51 and inclines upwardly from the bobbin recess 55 to a threadaperture 58 formed in said shuttle, a suitable tension spring 59 beingsecured upon the shuttle in close proximity to said thread aperture 58,as shown in Figs. 4 and 6; with this arrangement the bobbin. or shuttlethread 60 passes from the bobbin 56 along and in the groove 57 andthrough the aperture 58 and after passing beneath the spring 59 is ledupward through the work support 39 to the work in the customary manner.In its normal position, and with the parts in their operative positions,the surfaces 52 of the shuttle 51 rest upon the surfaces 49 of thecasing by gravity, the shuttle extending downwardly beyond the open endof said casing and through the opening 40 of the bed-plate 15, as shownin Figs. 1, 5 and 7. lVith the parts in their operative positions, itwill be seen that the shuttle 51 is loosely held in the casing 43 so asto be capable of a freedom of movement therein, which may be bestexpressed by the term floating, the shuttle being otherwise stationaryso far as any rotating or oscillating movements are concerned; theoating movement of the shuttle, it will be understood, never comprisesmore than a slight movement and in no way depends upon its mounting butis wholly under the control of the needle thread 27 during the formationof a stitch, as will be more fully described hereinafter. i

In machines of the type illustrated, the needle 35 is rcciprocated andthe needle thread 27 is formed into a loop a at the upper end of thework support 39 in the well known way; in order to carry out the stitchforming operation, it is necessary to draw this loop a downwardly in thework support 39, as will appear more fully in the description of theoperation of the machine appearing hereinafter. Any suitable mechanismmay be provided for this purpose, the arrangement illustrated havingbeen found satisfactory. This mechanism, as shown, comprises a hook 61located at the end of a rod 62 adapted to slide vertically in a guidewayG3 formed in a pivoted rock-arm 64. The latter may be pivotallyconnected at its lower end, as indicated at (35, with a bracket 66depending from the bed-plate 15, the pivot preferably being in thenature of a universal joint, as illustrated in Figs. 4 and 6. The rod 62is of sufficient length to move upwardly into the work support 39 therequired distance and has its lower end bent outwardly, as indicated at'67, and provided with a ballhead or the like, G8, arranged to fitwithin a socket, 69, located at one end 0f a rock-lever, 70. The latteris carried by a sleeve 71 pivotally mounted at 72 upon a bracket, 7 3,which depends .from and is secured to the bed-plate, l5, as shown inFig. 1; an arm, 74, extends from the sleeve, 71, in a direction oppositeto that of the lever, 70, and at its free end carries a roller or thelike, 75, extending into and arranged to follow the groove 76 of a cam,

77. The latter is mounted upon a vertical shaft, 7S, Journaled 1n asuitable bearing 79 comprising, for instance, an integral art of thebracket, 73, said shaft 78 exten ing` upwardly into the pillar 16 andbeing operatively lconnected with the Vmain shaft 20 in any well knownand customary manner. The groove 76 of the cam 77 is so shaped as torock the arm 74 and the lever 7 0 in a mannerto reciprocate the rod 62and hook 61 in the desired manner and in proper synchronism with theothermechanism.

In order `to properly `carry out the in tended operations the hook 61,in, addition to its vertically reciprocating movements, is rocked at theproper time in directions transverse to its length. For this purpose therock-arm 64 is provided near its upper end with a socket member, 80, inwhich the ball-head 81 of a link, 82, is located, as shown in Figs. 1,2, 5 and 7. The link 82 is pivotally connected at 83 with a lever, 84,pivoted at 85 upon a bracket, 86, also depending from the bed-plate, 15,as yillustrated in Fig.` 1. Theglever, 84, rotatably carries a roller orthe like, 87, extending into and arranged to follow the horizontallylocated groove, 88, of a cam, `89, which al-so is carried by the uprightshaft, 78, as shown in Figs. 1 and 2. It will be understood that the camgroove, 8S, also is so shaped and arranged as to brin about the desiredtransverse swinging of t ie hook, 61, at the proper time and insynchronism with the other mechanisms. For thepurpose of overcomingundesirable vibration and in order to steady the swinging movement ofthe rockarm, 64, it may be provided at its upper end with a. lguidemember, 90, arranged to slide in a guideway, 91, formed in a bracket, 92

asshown in Figs. 1, 4, 5, 6 and 7. The

bracket 92 may be carried by the bracket, 66 and is preferablydetachably and adjustably connected therewith by means of a slot 'andscrew, 93, it being understood that any otherr suitablemea-ns adaptedfor the purpose may be substituted if desired.

. Intheoperation of the machine, the shut- I tle, after having beenraised or floated under the action of the needle. thread, 27, as

will be fully described further on, will ordinarily return to or retreatto its normal position bygravity. For the purpose, how-` ever, ofpositively avoiding the danger of a failure of said shuttle 5l to thusreturn to said normal position and also to arrest the floating movementof said shuttle under the actionof the thread 27, in case this shouldbecome necessary, a stop-lug 95 arranged to coperate with the projection54 for the above mentioned [purposes may be provided. This stop-lug` 95is carried by Aarod 96 slidable lengthwise in bearings 97 located inspaced relation to each other lengthwise of and upon the rock-arm 64; acoil spring 98 surrounds said rod 96 between one of the bearings 97 anda collar 99 secured upon the rod 96, as shown in the drawings. The lowerend of the rod 96 is formed with a compound bend so as to provide amember 100 located in the path of the bend 67 of the hook-rod 62; withthis arrangement the rod 96 and the stop-lug 95 are actuated in theintended manner and at the proper time by said bend 67, as will be moredefinitely brought out hereinafter.

In utilizing my improved machine in the form illustrated, the operationis as follows: As before stated, the needle 35 is reciprocatedvertically in the customary manner and by penetrating the material orwork held on the end of the work support 39 carries the needle thread 27downwardly into said hollow work support, which needle thread .27 isformed into the loop a within said hollow work support as the needle 35retreats in an upward direction. Owing to the fact that the eye of theneedle 35 faces in the direction of the line of -feed of the machine,the loop a, is formed in a plane parallel with said line of feed, as isindicated in the drawings. Previous to the formation of the loop a, therod 62 'is moved upwardly into said work support 39 through the mediumof the lever, 70, and arm, 74, by the action of the cam groove, 76, to apoint favorable to the engagement of said loop (L by the hook 61. Afterthe loop a has been formed as hereinbefore described, the rockarm 64, ismoved sufficiently through the action of the cam groove S8, lever S4 andlink 82, to cause the hook 61 to engage the loop a and to bring therock-arm 6 4 to the positions shown in Figs. 4 and 5. As the operationof the machine continues, the action of the cam groove 76 will reversethe movement of the rod 63 and will now move the hook 61 downwardly sothat the loop a is drawn downwardly in the work support 39 in the mannerindicated in Figs. 4 and 5, and, in Fig. 1, the latter showing the loopa nearing its lowest position. The downward movement of said hook 61continues until the lowerl end of the loop a is at a point somewhatbelow the projection 54 of the 115 shuttle 5l, it being understood thatsaid projection 54 tapers toward said loop. At this stage the action ofthe horizontal cam groove 88 swings the lever 84 on its pivot 85, whichmovement is communicated to the 120 link 82 and causes the rock-arm 64to be swung on its pivot 65 toward the shuttle 51. This brings the loopa into engagement with the tapering projection 54 which now acts as aspreader or separator to spread or sepa- 125 rate the two strands of theloop a, which as a result partly encircles the shuttle 51 at its lowerend. This swinging movement of the rock-arm 64 at the same time bringsthe hook 61 into registry with the recess 53 of 130 the shuttle 51although somewhat below the same and also moves the stop-lug 95 to a position over the projection 54.

The action of the cani groove 7 6 now 0perates the arm 74 and lever 70to impart a slight upward movement to the rod 62 which causes the hook61 to move up into the recess 53 of the shuttle 51, as shown in Fig. 7of the drawings. As the hook 61 thus moves upwardly into said recess 53,the loop a carried by the hook 61, will, by engagement with the shuttleat opposite sides of said recess 53, be withdrawn or released from saidhook 61, 0r, in other words, said loop a willA be freed therefrom. Atthis point the take-up mechanism through the medium 0f the pulley 31 andlever 32, begins to draw the needle thread 27 upwardly, thus bringingthe loop a under an upward tension which is consequently exerted on theshuttle 51 and slightly lifts same or causesit to float upwardly in thecasing 43. As the operation of the mechanism proceeds, the upwardmovement of the loop t is continued and said loop a is drawn over theshuttle 51 between it and the surface 47 0f the casing and continuingpasses between the shuttle and the curved surface 48 and finally movesbetween the shuttle and the surface 45 out of the casing 43. The shuttle51 is in this manner passed completely through the loop a which, afterleaving the casing 43, continues onward underthe action of the mechanismto finally complete the locking of the stitch. It will be understoodthat the arrangement of the shuttle within the casing and the proportionof the parts is such that the thread forming the loop a readily passesbetween the shuttle 51 and the casing 43, after the shuttle has beeniioated by the action of the needle thread 27 as described; the passingof the loop a over the shuttle 51 and out of the casing 43 is furtherfacilitated by the form of both the shuttle and said casing. During thetime the loop a passes over the shuttle in the manner described, thehook 61 is located within the recess 53 and thus at no time, after theloop a has been released, interferes with the passage of said loop overthe shuttle. The slight raising or floating of the shuttle 51 brings theprojection 54 from the position shown in Fig. 7 to a slightly higherposition in which said projection actually or very nearly contacts withthe stop-lug 95.

After the loop a has passed completely over the shuttle 51 and out ofthe casing 43, the shuttle 51 being relieved from the tension exerted bythe needle thread 27, or, more specifically, the loop a, will ordinarilydrop back by gravity to its initial position in which its surfaces 52rest upon the converging surfaces 49 of the casing 43, where it wouldremain were `it not for the fact that the loop a when it reaches theunder side of the work, draws a small amount of the thread 60 from thebobbin 56 in the shut tle 51.

The drawing of threadl'60 under the tension spring 59 on shuttle 5lordinarily would cause said shuttle to again rise, from its normalposition in contact with the converging surfaces 49- of case 43, yto asuspended position on thread 60 but for the, fact that just previo-us tothe drawing of the thread 60 from the shuttle 51 as described, the camgroove 76 causes the rod '62 to move downwardly out of the recess 53 tola point somewhat lower than it finally occupies in the operation ofdrawing the loop a of the needle thread 27 downwardly as previously setforth. j

This Aexcessive 'downward or over-running movement of the rod 62 bringsthe bend 67 into contact with the member 10.0 of the rod 96 and causesit to move downwardly a sufficient distance to bring the stop-lug 95in-to engagement with the projection 54 of the shuttle 51, therebyholding said shuttle in its normal or restingV position during thewithdrawal of the requisite amount of thread 60 from the bobbin tocomplete the locking of the stitch, and resisting the lifting actionexerted bysaid thread 60,

After the completion of the stitch the rod 62, through the medium of thecam groove 76 again moves upwardly -to a slight extent thus relievingthe pressure of the bend 67 on the member 100 and permitting the rod 96to move upwardly under the influence of the spring 98 acting upon collar99 which is fastened on said rod 96.

The described upward movement of the rod 96 moves the stop-lug 95 out4of Contact with the projection 54 of the shuttle and thus permits therock-arm 64 to move freely back to the position shown in Fig. 1 throughthe action of cam groove 88, and without exerting any force -upon theprojection 54 through frictional contact therewith, tending to disturbthe shuttle 51; during `the transverse swinging movementsof the rockarm64 on its pivot 65, the member 90 slides in the groove 91 and maintainssaid roel:- arm 64 in a constant path.

lVith my improved construction the shuttle 51 is stationary at alltimes, excepting for the slight lifting or floating movement whichperiodically takes place under the iniiuence of the loop e of the needlethread 27 and at no time during the operation of the machine, does saidshuttle rotate, oscillate or partake of any movement other than the onereferred to. In machines having a rotating, an oscillating or otherwiseconstantly movable shuttle, there is always the danger that the threadloop and shuttle, both generally speaking being in motion, will misseach other particularly if the machine is run at a high speed. With myimproved arrangement the thread loop is moved toward a spreader which atthe stage when such step takes place, is stationary so that thepossibility of the shuttle being missed by the thread loop is reduced toa minimum, i-f not entirely obviated. The action of the machine is thusextremely positive at all times and the most efficient results areobtained regardless of the speed of operation. The

stitching with my impro-vedarrangement, is also even and uniform and theformation of knots during sewing is practically eliminated thuspermitting a continuity of operation free from interruptions.

With my improvement, itis also always possible to locate the shuttle atareadily accessible point so that said shuttle may easily be removed fromor replaced in the machine; in the illustrated example the shuttle islocated above the bed-plate and is made readily accessible by simplyswinging the casing i3 on its pivot 50 to the position shown in Figs. 9and 10. With the casing .'in this position the shuttle may be easilylifted therefrom or readily placed thereon,

no particular skill being necessary as the form of the shuttle withrespect `to that of the casing is such that it is impossible to placethe shuttle in the casing in any position other than the correct one. Itwill, of course, be understood :that the illustrated form of casing andshuttle. may be obviously replaced by other forms coperating in thedesired manner; thus while the illustrated arrangement may be thepreferred arrange- ',ment, it is not to be construed as being the onlyone possible.

It is to be further understood that I have shown my invention incombination with a sewing machine of the glove sewing type simply forillustrative and descriptive purposes and that I do not wish to berestricted to this type of machine. Obviously variations in the specificdetails of constructions,

,may be made within the scope of the claims without departing from thespirit of my invention and whereby the same may readily be adapted tosewing machines of any kind.

I claim:

l. In a sewing machine, the combination of sewing mechanism arranged toform a thread loop, an independent shuttle over which said thread loopis passed, said'shuttle being unrestrained in its normal position andbeing moved from said normal position entirely by tension imposedthrough the thread to permit the passage of said loop and mechanismarranged to engage said shuttle whereby the latter is positivelyreturned to its normal position after the passage of said loop. n l"iii. In a sowing machine the combination ranged to form` a needle-threadloop, a shuttle over which said loop is passed, said shuttle beingfloated by the needle thread to permit the passage of said loop, meanswhereby said floating movement of the shuttle is arrested and mechanismfor actuating said means to positively return said shuttle to its normalposition after the passage of said loo In a sewing machine thecombination of sewing mechanism including a needle arranged to form aneedle thread loop, a shuttle over which said loop is passed, saidshuttle being floated by the needle thread to permit the passage of saidloop, a projection on said shuttle, and means coperating with saidprojecton to arrest the floatng movement of said shuttle and to assistthe return thereof to normal position after the passage of said loop. j

4. A sewing machine comprising sewing mechanism arranged to form. athread-loop, ashuttle` casing, a shuttle loosely mounted therein overwhich said loop is passed, said shuttle being lifted in said casing bytension imposed through said thread-loop to provide a passage betweensaid shuttle and casing for the passage of said loop, a projection onsaid shuttle, a lug coperating with said projection to arrest thelifting movement of said shuttle, la rod carrying said lug and meanswhereby said rod is actuated to cause said lug to assist the returnmovementof said shuttle to normal pointo said recess whereby said loopis released from -said hook, said shuttle being moved by said needlethread to permit the passage of said loop.

6. In a sewing machine, the combination of a reciprocating needlearranged to form a needle-thread loop, a shuttle having a recess, a hookadapted to engage said loop, a tapering projection on said shuttle inadvance of said recess,.and means for moving said hook toward saidprojection into registry with said recess whereby said loop is spread toencircle said shuttle and for moving said hook into said recess wherebysaid loop is released from said hook, said shuttle being moved by theneedle-thread "to permit the passage of said loop.

7 .j In a sewing machine, a shuttle-casing open at one end and at oneside, oppositely located surfaces in said casing converging toward itsopen and, a shiittle in said casing itlriread.l

and converging surfaces on said shuttle arranged to cooperate with theconverging surfaces of the casing to position the shuttle therein.

8. In a sewing machine, a bed plate, a shuttle-casing pivotallyconnected with said Ibed plate and located entirely above the saine, anda shuttle in said casing.

9. In a sewing machine, a bed plate, a hollow work support having anopening, a shuttle located in registry with said opening, a needlereciprocating in said work suppor-t to form a thread loop ltherein, andmeans for passing said loop over said shuttle, the latter being iniovedentirely by tension imposed through the needle thread to permit thepassage of said loop.

10. In a sewing machine, a bed plate, a hollow work support having anopening eX- tending lengthwise thereof, a casing on said bed plate inregistry with saidopening, a shuttle in said casing, a spreader carriedby said shuttle, a needle reciprocating in said work support, to form athread loop therein, and means for drawing said loop lengthwise of saidsupport and for moving said loop into engagement with said spreaderwhereby said loop is passed over said shuttle, the latter being moved insaid casingy by the needle thread to permit the assage of said loop.

11. In a sewing mac ine, a bed plate having an aperture, a hollowworksupport in registry with said aperture and having a lengthwiseextend-ing opening, a casing open at its lower end and at one side, saidcasing being hinged upon said bed plate and normally having its lowerend in registry with the bed'` plate aperture and its open side inregistry with the opening of said work support, a shuttle located insaid casing, a needle reciprocating in said work support to form athread loop therein, and means for passing said loop over said shuttle,the latter being lifted in said casing by the needle thread to permitthe passage of said loop.

12. In a sewing machine, a bed plate having an aperture, a. hollow worksupport in registry with said aperture and having a lengthwise extendingopening, a casing open at its lower end and at one side, said casingbeing hinged upon said bed plate and normally having its lower end in:registry with the bed plate aperture and its open side in registry withthe opening of said work support, a shuttle located in said casing, aneedle reciprocating in said work support to form a thread loop therein,means for passing said loop over said shuttle7 the latter being liftedin said casing by the needle thread to permit the passage of said loop,and means for assisting the return of said shuttle to its normalposition after it is relieved from the` tension exerted by said needle13. In a sewing machine, a bed plate having an aperture, a hollow worksupport in registry with said aperture and having a lengthwise extendingopening, a casing open at its lower end and at one side, said casingbeing hinged upon said bed plate and normally having its lower end inregistry with the bed plate aperture and its open side in registry withthe opening of said work support, `a shuttle located in said casing, aneedle reciprocating in said work support to form a thread loop therein,means for passing said loop over said shuttle, the latter being liftedin said casing by the needle thread to permit the 'passage of said loop,a stop lug whereby said shuttle is maintained in its normal positionafter the final passage of said loop and a rod connected with said lugand arranged to be operated by said means.

14. A sewing machine comprising a bed plate -having an aperture, ahollow work support in registry with said aperture and having alengthwise extending opening, a casing on said bed plate open toward andin registry with the opening of said work support, said casing having anopen end in registry with the bed plate aperture, a shuttle looselymounted in said casing and extending into said bed plate aperture, saidshuttle' being provided with a recess, a spreader carried by saidshuttle, 1n advance of said recess, a needle reciprocating 1n said work'support to form a thread loop therein, a

hook arranged to engage said loop, means for actuating said hook to drawsaid loop downwardly in said work support, means for moving said hooktransversely to its length into registry with said recess whereby saidloop is spread by said spreader and caused to encircle said shuttle,said means moving said hook into said recess whereby said loop isreleased from the hook and passed over the shuttle and out of thecasing, said shuttle being lifted in said casing by the needle thread topermit the passage of said loop, a stop-lug cooperating with saidspreader to maintain said shuttle in its normal position after thepassage of said loop and a rod whereby said lug is actuated, sai rodbeing operated by the hook actuating means.

l5. 'In a sewing machine, the combinationof a reciprocating needlehaving its eye facing in the direction of feed of the material beingsewed, and arranged to form a thread loop, a shuttle, a spreader on saidshuttle extending at a right angle to the direction of feed, and meansfor moving said threadloop into engagement with said spreader wherebysaid loop is spread and passed over said shuttle, the latter beinglifted by the peedle thread to permit the passage of said oop.

16,v Ink a sewing machine, a reciprocating needle for forming athread-loop, a shuttle having no operative movement of its own and beingunrestrained against upward movement, a take-up mechanism for drawingsaid thread-loop completely over said l shuttle and for causing saidthread-loop to exert alifting tension whereby said shuttle is raised topermit the passage of said loop and mechanism arranged to engage Saidshuttle whereby the latter is positively re- 10 turned to its normalposition after the passage of said loop.

In testimony whereof I have hereunto set my hand.

FREDERIC S. WILLIAMS.

copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

' Washington, D. G."

